Jonah newton



UNITED STATES PATENT OFFICE.

JONAH NEWTON, OF NEW YORK, N. Y.

METHOD OF SECURING CUTTER/S T0 ROTARY DISKS.

Specification forming' parl: of Letters Patent No. 13,096, dated June To all whom it may concern.'

Be it known that I, JONAH NEWTON, of the city, county, and State of New York, have invented a new and Improved Mode of Securing Cutters to Rotating Disks or Plates for the Purpose of Cutting Tongues and Grooves, Mortises, &c.; and I do hereby declare that the following is a full, clear,

yand exact description of the same, reference being had to the annexed drawings, making a part of this specification, in which" Figure l, is a side view of' the disk or plate with four cutters attached to it. Fig.Y

a peculiar manner as will be hereafter fully shown and described, whereby the cutters may be adjusted so as to be always in proper position and act upon the wood or stuit at a proper angle.

To enable others skilled in the art to fully understand and construct my invention I will proceed to describe it.

A represents the disk or plate to which the cutters (a) are attached. The disk or plate is hung as usual upon a rotating shaft, and may be as shown in Fig. 1, of square form having a projection (o) at each angle or corner. The front edges ot the projections (b) are of semicircular` form and have grooves (c) cut in them, one in each, at the centers of the edges, as clearly shown in Figs. 2 and 3.

The cutters (a) are of semicircular form and have each a projection or ledge (d) on their backs or convex sides which are fitted in the grooves (c). The front or concave sides of the cutters (a) have each a groove (c) cut in them in which a segment nut or head (f) lits, the back or convex sides 0f the nuts having each a ledge or projection (g) which fit in the grooves (c), see Figs. 2 and 3. l

19', 1855; Ressued August 13,

Through each of the pro-jections (b) a screw (7L) passes, the screws (it) also passing through the cutters (a) and into. the nuts or heads f. A slit is made see F ig. 2 through each cutter for the screws to pass thro-ugh and also to allow a certain degree of play.

rThe cutters are firmly secured to the projections by the screws (71,) as will readily be seen and the cutters cannot move laterally in consequence of the projections or ledges (d) on their backs fitting in the grooves (c) in the front edges of the projections. Now as the cutters are worn by being sharpened, they may be moved outward by relaxing the screws (h) so that the cutting edges will always be in the proper position and act upon the wood or stuff7 at the proper angle, the slots (i) allowing the cutters to be moved outward.

The above invention is extremely simple and the cutters are firmly secured to the disk or plate thereby, the great difficulty at presentwith the usual forms of attachment is that the cutters work loose not being well (suplported and firmly secured to the plate or Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is-

Securing the cutters (a) to the disk or plate A, as herein shown and described, v.iz.,.having the cutters of semicircular form with ledges or projections (CZ) on their back or convex sides, the ledges or projections `being fitted in grooves (c) in the semicircular edges of the projections (7)) ot' the plate A, l The front or concave sides of the cutters having grooves (e) in them to receive the nuts or segment heads (f). The projections (b) cutters (a) and nuts or heads having screws (71,) passing through them, for the purpose of allowing the cutters to be adjusted properly and also securing firmly the cutters to the disk or plate.

JONAH NEWTON.

Witnesses J. W. CooMBs,

WILLIAM TUscH.

[FIRST PRINTED 1912.] 

